diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 2500 |
1 files changed, 2500 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c new file mode 100644 index 000000000000..1b4de3486ef9 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -0,0 +1,2500 @@ +/* + * Copyright (c) 2014-2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__ +#include <linux/kthread.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> + +#include "msm_drv.h" +#include "dpu_kms.h" +#include <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> +#include "dpu_hwio.h" +#include "dpu_hw_catalog.h" +#include "dpu_hw_intf.h" +#include "dpu_hw_ctl.h" +#include "dpu_formats.h" +#include "dpu_encoder_phys.h" +#include "dpu_crtc.h" +#include "dpu_trace.h" +#include "dpu_core_irq.h" + +#define DPU_DEBUG_ENC(e, fmt, ...) DPU_DEBUG("enc%d " fmt,\ + (e) ? (e)->base.base.id : -1, ##__VA_ARGS__) + +#define DPU_ERROR_ENC(e, fmt, ...) DPU_ERROR("enc%d " fmt,\ + (e) ? (e)->base.base.id : -1, ##__VA_ARGS__) + +#define DPU_DEBUG_PHYS(p, fmt, ...) DPU_DEBUG("enc%d intf%d pp%d " fmt,\ + (p) ? (p)->parent->base.id : -1, \ + (p) ? (p)->intf_idx - INTF_0 : -1, \ + (p) ? ((p)->hw_pp ? (p)->hw_pp->idx - PINGPONG_0 : -1) : -1, \ + ##__VA_ARGS__) + +#define DPU_ERROR_PHYS(p, fmt, ...) DPU_ERROR("enc%d intf%d pp%d " fmt,\ + (p) ? (p)->parent->base.id : -1, \ + (p) ? (p)->intf_idx - INTF_0 : -1, \ + (p) ? ((p)->hw_pp ? (p)->hw_pp->idx - PINGPONG_0 : -1) : -1, \ + ##__VA_ARGS__) + +/* + * Two to anticipate panels that can do cmd/vid dynamic switching + * plan is to create all possible physical encoder types, and switch between + * them at runtime + */ +#define NUM_PHYS_ENCODER_TYPES 2 + +#define MAX_PHYS_ENCODERS_PER_VIRTUAL \ + (MAX_H_TILES_PER_DISPLAY * NUM_PHYS_ENCODER_TYPES) + +#define MAX_CHANNELS_PER_ENC 2 + +#define MISR_BUFF_SIZE 256 + +#define IDLE_SHORT_TIMEOUT 1 + +#define MAX_VDISPLAY_SPLIT 1080 + +/** + * enum dpu_enc_rc_events - events for resource control state machine + * @DPU_ENC_RC_EVENT_KICKOFF: + * This event happens at NORMAL priority. + * Event that signals the start of the transfer. When this event is + * received, enable MDP/DSI core clocks. Regardless of the previous + * state, the resource should be in ON state at the end of this event. + * @DPU_ENC_RC_EVENT_FRAME_DONE: + * This event happens at INTERRUPT level. + * Event signals the end of the data transfer after the PP FRAME_DONE + * event. At the end of this event, a delayed work is scheduled to go to + * IDLE_PC state after IDLE_TIMEOUT time. + * @DPU_ENC_RC_EVENT_PRE_STOP: + * This event happens at NORMAL priority. + * This event, when received during the ON state, leave the RC STATE + * in the PRE_OFF state. It should be followed by the STOP event as + * part of encoder disable. + * If received during IDLE or OFF states, it will do nothing. + * @DPU_ENC_RC_EVENT_STOP: + * This event happens at NORMAL priority. + * When this event is received, disable all the MDP/DSI core clocks, and + * disable IRQs. It should be called from the PRE_OFF or IDLE states. + * IDLE is expected when IDLE_PC has run, and PRE_OFF did nothing. + * PRE_OFF is expected when PRE_STOP was executed during the ON state. + * Resource state should be in OFF at the end of the event. + * @DPU_ENC_RC_EVENT_ENTER_IDLE: + * This event happens at NORMAL priority from a work item. + * Event signals that there were no frame updates for IDLE_TIMEOUT time. + * This would disable MDP/DSI core clocks and change the resource state + * to IDLE. + */ +enum dpu_enc_rc_events { + DPU_ENC_RC_EVENT_KICKOFF = 1, + DPU_ENC_RC_EVENT_FRAME_DONE, + DPU_ENC_RC_EVENT_PRE_STOP, + DPU_ENC_RC_EVENT_STOP, + DPU_ENC_RC_EVENT_ENTER_IDLE +}; + +/* + * enum dpu_enc_rc_states - states that the resource control maintains + * @DPU_ENC_RC_STATE_OFF: Resource is in OFF state + * @DPU_ENC_RC_STATE_PRE_OFF: Resource is transitioning to OFF state + * @DPU_ENC_RC_STATE_ON: Resource is in ON state + * @DPU_ENC_RC_STATE_MODESET: Resource is in modeset state + * @DPU_ENC_RC_STATE_IDLE: Resource is in IDLE state + */ +enum dpu_enc_rc_states { + DPU_ENC_RC_STATE_OFF, + DPU_ENC_RC_STATE_PRE_OFF, + DPU_ENC_RC_STATE_ON, + DPU_ENC_RC_STATE_IDLE +}; + +/** + * struct dpu_encoder_virt - virtual encoder. Container of one or more physical + * encoders. Virtual encoder manages one "logical" display. Physical + * encoders manage one intf block, tied to a specific panel/sub-panel. + * Virtual encoder defers as much as possible to the physical encoders. + * Virtual encoder registers itself with the DRM Framework as the encoder. + * @base: drm_encoder base class for registration with DRM + * @enc_spin_lock: Virtual-Encoder-Wide Spin Lock for IRQ purposes + * @bus_scaling_client: Client handle to the bus scaling interface + * @num_phys_encs: Actual number of physical encoders contained. + * @phys_encs: Container of physical encoders managed. + * @cur_master: Pointer to the current master in this mode. Optimization + * Only valid after enable. Cleared as disable. + * @hw_pp Handle to the pingpong blocks used for the display. No. + * pingpong blocks can be different than num_phys_encs. + * @intfs_swapped Whether or not the phys_enc interfaces have been swapped + * for partial update right-only cases, such as pingpong + * split where virtual pingpong does not generate IRQs + * @crtc_vblank_cb: Callback into the upper layer / CRTC for + * notification of the VBLANK + * @crtc_vblank_cb_data: Data from upper layer for VBLANK notification + * @crtc_kickoff_cb: Callback into CRTC that will flush & start + * all CTL paths + * @crtc_kickoff_cb_data: Opaque user data given to crtc_kickoff_cb + * @debugfs_root: Debug file system root file node + * @enc_lock: Lock around physical encoder create/destroy and + access. + * @frame_busy_mask: Bitmask tracking which phys_enc we are still + * busy processing current command. + * Bit0 = phys_encs[0] etc. + * @crtc_frame_event_cb: callback handler for frame event + * @crtc_frame_event_cb_data: callback handler private data + * @frame_done_timeout: frame done timeout in Hz + * @frame_done_timer: watchdog timer for frame done event + * @vsync_event_timer: vsync timer + * @disp_info: local copy of msm_display_info struct + * @misr_enable: misr enable/disable status + * @misr_frame_count: misr frame count before start capturing the data + * @idle_pc_supported: indicate if idle power collaps is supported + * @rc_lock: resource control mutex lock to protect + * virt encoder over various state changes + * @rc_state: resource controller state + * @delayed_off_work: delayed worker to schedule disabling of + * clks and resources after IDLE_TIMEOUT time. + * @vsync_event_work: worker to handle vsync event for autorefresh + * @topology: topology of the display + * @mode_set_complete: flag to indicate modeset completion + * @idle_timeout: idle timeout duration in milliseconds + */ +struct dpu_encoder_virt { + struct drm_encoder base; + spinlock_t enc_spinlock; + uint32_t bus_scaling_client; + + uint32_t display_num_of_h_tiles; + + unsigned int num_phys_encs; + struct dpu_encoder_phys *phys_encs[MAX_PHYS_ENCODERS_PER_VIRTUAL]; + struct dpu_encoder_phys *cur_master; + struct dpu_hw_pingpong *hw_pp[MAX_CHANNELS_PER_ENC]; + + bool intfs_swapped; + + void (*crtc_vblank_cb)(void *); + void *crtc_vblank_cb_data; + + struct dentry *debugfs_root; + struct mutex enc_lock; + DECLARE_BITMAP(frame_busy_mask, MAX_PHYS_ENCODERS_PER_VIRTUAL); + void (*crtc_frame_event_cb)(void *, u32 event); + void *crtc_frame_event_cb_data; + + atomic_t frame_done_timeout; + struct timer_list frame_done_timer; + struct timer_list vsync_event_timer; + + struct msm_display_info disp_info; + bool misr_enable; + u32 misr_frame_count; + + bool idle_pc_supported; + struct mutex rc_lock; + enum dpu_enc_rc_states rc_state; + struct kthread_delayed_work delayed_off_work; + struct kthread_work vsync_event_work; + struct msm_display_topology topology; + bool mode_set_complete; + + u32 idle_timeout; +}; + +#define to_dpu_encoder_virt(x) container_of(x, struct dpu_encoder_virt, base) +static inline int _dpu_encoder_power_enable(struct dpu_encoder_virt *dpu_enc, + bool enable) +{ + struct drm_encoder *drm_enc; + struct msm_drm_private *priv; + struct dpu_kms *dpu_kms; + + if (!dpu_enc) { + DPU_ERROR("invalid dpu enc\n"); + return -EINVAL; + } + + drm_enc = &dpu_enc->base; + if (!drm_enc->dev || !drm_enc->dev->dev_private) { + DPU_ERROR("drm device invalid\n"); + return -EINVAL; + } + + priv = drm_enc->dev->dev_private; + if (!priv->kms) { + DPU_ERROR("invalid kms\n"); + return -EINVAL; + } + + dpu_kms = to_dpu_kms(priv->kms); + + if (enable) + pm_runtime_get_sync(&dpu_kms->pdev->dev); + else + pm_runtime_put_sync(&dpu_kms->pdev->dev); + + return 0; +} + +void dpu_encoder_helper_report_irq_timeout(struct dpu_encoder_phys *phys_enc, + enum dpu_intr_idx intr_idx) +{ + DRM_ERROR("irq timeout id=%u, intf=%d, pp=%d, intr=%d\n", + DRMID(phys_enc->parent), phys_enc->intf_idx - INTF_0, + phys_enc->hw_pp->idx - PINGPONG_0, intr_idx); + + if (phys_enc->parent_ops->handle_frame_done) + phys_enc->parent_ops->handle_frame_done( + phys_enc->parent, phys_enc, + DPU_ENCODER_FRAME_EVENT_ERROR); +} + +static int dpu_encoder_helper_wait_event_timeout(int32_t drm_id, + int32_t hw_id, struct dpu_encoder_wait_info *info); + +int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc, + enum dpu_intr_idx intr_idx, + struct dpu_encoder_wait_info *wait_info) +{ + struct dpu_encoder_irq *irq; + u32 irq_status; + int ret; + + if (!phys_enc || !wait_info || intr_idx >= INTR_IDX_MAX) { + DPU_ERROR("invalid params\n"); + return -EINVAL; + } + irq = &phys_enc->irq[intr_idx]; + + /* note: do master / slave checking outside */ + + /* return EWOULDBLOCK since we know the wait isn't necessary */ + if (phys_enc->enable_state == DPU_ENC_DISABLED) { + DRM_ERROR("encoder is disabled id=%u, intr=%d, hw=%d, irq=%d", + DRMID(phys_enc->parent), intr_idx, irq->hw_idx, + irq->irq_idx); + return -EWOULDBLOCK; + } + + if (irq->irq_idx < 0) { + DRM_DEBUG_KMS("skip irq wait id=%u, intr=%d, hw=%d, irq=%s", + DRMID(phys_enc->parent), intr_idx, irq->hw_idx, + irq->name); + return 0; + } + + DRM_DEBUG_KMS("id=%u, intr=%d, hw=%d, irq=%d, pp=%d, pending_cnt=%d", + DRMID(phys_enc->parent), intr_idx, irq->hw_idx, + irq->irq_idx, phys_enc->hw_pp->idx - PINGPONG_0, + atomic_read(wait_info->atomic_cnt)); + + ret = dpu_encoder_helper_wait_event_timeout( + DRMID(phys_enc->parent), + irq->hw_idx, + wait_info); + + if (ret <= 0) { + irq_status = dpu_core_irq_read(phys_enc->dpu_kms, + irq->irq_idx, true); + if (irq_status) { + unsigned long flags; + + DRM_DEBUG_KMS("irq not triggered id=%u, intr=%d, " + "hw=%d, irq=%d, pp=%d, atomic_cnt=%d", + DRMID(phys_enc->parent), intr_idx, + irq->hw_idx, irq->irq_idx, + phys_enc->hw_pp->idx - PINGPONG_0, + atomic_read(wait_info->atomic_cnt)); + local_irq_save(flags); + irq->cb.func(phys_enc, irq->irq_idx); + local_irq_restore(flags); + ret = 0; + } else { + ret = -ETIMEDOUT; + DRM_DEBUG_KMS("irq timeout id=%u, intr=%d, " + "hw=%d, irq=%d, pp=%d, atomic_cnt=%d", + DRMID(phys_enc->parent), intr_idx, + irq->hw_idx, irq->irq_idx, + phys_enc->hw_pp->idx - PINGPONG_0, + atomic_read(wait_info->atomic_cnt)); + } + } else { + ret = 0; + trace_dpu_enc_irq_wait_success(DRMID(phys_enc->parent), + intr_idx, irq->hw_idx, irq->irq_idx, + phys_enc->hw_pp->idx - PINGPONG_0, + atomic_read(wait_info->atomic_cnt)); + } + + return ret; +} + +int dpu_encoder_helper_register_irq(struct dpu_encoder_phys *phys_enc, + enum dpu_intr_idx intr_idx) +{ + struct dpu_encoder_irq *irq; + int ret = 0; + + if (!phys_enc || intr_idx >= INTR_IDX_MAX) { + DPU_ERROR("invalid params\n"); + return -EINVAL; + } + irq = &phys_enc->irq[intr_idx]; + + if (irq->irq_idx >= 0) { + DPU_DEBUG_PHYS(phys_enc, + "skipping already registered irq %s type %d\n", + irq->name, irq->intr_type); + return 0; + } + + irq->irq_idx = dpu_core_irq_idx_lookup(phys_enc->dpu_kms, + irq->intr_type, irq->hw_idx); + if (irq->irq_idx < 0) { + DPU_ERROR_PHYS(phys_enc, + "failed to lookup IRQ index for %s type:%d\n", + irq->name, irq->intr_type); + return -EINVAL; + } + + ret = dpu_core_irq_register_callback(phys_enc->dpu_kms, irq->irq_idx, + &irq->cb); + if (ret) { + DPU_ERROR_PHYS(phys_enc, + "failed to register IRQ callback for %s\n", + irq->name); + irq->irq_idx = -EINVAL; + return ret; + } + + ret = dpu_core_irq_enable(phys_enc->dpu_kms, &irq->irq_idx, 1); + if (ret) { + DRM_ERROR("enable failed id=%u, intr=%d, hw=%d, irq=%d", + DRMID(phys_enc->parent), intr_idx, irq->hw_idx, + irq->irq_idx); + dpu_core_irq_unregister_callback(phys_enc->dpu_kms, + irq->irq_idx, &irq->cb); + irq->irq_idx = -EINVAL; + return ret; + } + + trace_dpu_enc_irq_register_success(DRMID(phys_enc->parent), intr_idx, + irq->hw_idx, irq->irq_idx); + + return ret; +} + +int dpu_encoder_helper_unregister_irq(struct dpu_encoder_phys *phys_enc, + enum dpu_intr_idx intr_idx) +{ + struct dpu_encoder_irq *irq; + int ret; + + if (!phys_enc) { + DPU_ERROR("invalid encoder\n"); + return -EINVAL; + } + irq = &phys_enc->irq[intr_idx]; + + /* silently skip irqs that weren't registered */ + if (irq->irq_idx < 0) { + DRM_ERROR("duplicate unregister id=%u, intr=%d, hw=%d, irq=%d", + DRMID(phys_enc->parent), intr_idx, irq->hw_idx, + irq->irq_idx); + return 0; + } + + ret = dpu_core_irq_disable(phys_enc->dpu_kms, &irq->irq_idx, 1); + if (ret) { + DRM_ERROR("disable failed id=%u, intr=%d, hw=%d, irq=%d ret=%d", + DRMID(phys_enc->parent), intr_idx, irq->hw_idx, + irq->irq_idx, ret); + } + + ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms, irq->irq_idx, + &irq->cb); + if (ret) { + DRM_ERROR("unreg cb fail id=%u, intr=%d, hw=%d, irq=%d ret=%d", + DRMID(phys_enc->parent), intr_idx, irq->hw_idx, + irq->irq_idx, ret); + } + + trace_dpu_enc_irq_unregister_success(DRMID(phys_enc->parent), intr_idx, + irq->hw_idx, irq->irq_idx); + + irq->irq_idx = -EINVAL; + + return 0; +} + +void dpu_encoder_get_hw_resources(struct drm_encoder *drm_enc, + struct dpu_encoder_hw_resources *hw_res, + struct drm_connector_state *conn_state) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + int i = 0; + + if (!hw_res || !drm_enc || !conn_state) { + DPU_ERROR("invalid argument(s), drm_enc %d, res %d, state %d\n", + drm_enc != 0, hw_res != 0, conn_state != 0); + return; + } + + dpu_enc = to_dpu_encoder_virt(drm_enc); + DPU_DEBUG_ENC(dpu_enc, "\n"); + + /* Query resources used by phys encs, expected to be without overlap */ + memset(hw_res, 0, sizeof(*hw_res)); + hw_res->display_num_of_h_tiles = dpu_enc->display_num_of_h_tiles; + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys && phys->ops.get_hw_resources) + phys->ops.get_hw_resources(phys, hw_res, conn_state); + } +} + +static void dpu_encoder_destroy(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + int i = 0; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + + dpu_enc = to_dpu_encoder_virt(drm_enc); + DPU_DEBUG_ENC(dpu_enc, "\n"); + + mutex_lock(&dpu_enc->enc_lock); + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys && phys->ops.destroy) { + phys->ops.destroy(phys); + --dpu_enc->num_phys_encs; + dpu_enc->phys_encs[i] = NULL; + } + } + + if (dpu_enc->num_phys_encs) + DPU_ERROR_ENC(dpu_enc, "expected 0 num_phys_encs not %d\n", + dpu_enc->num_phys_encs); + dpu_enc->num_phys_encs = 0; + mutex_unlock(&dpu_enc->enc_lock); + + drm_encoder_cleanup(drm_enc); + mutex_destroy(&dpu_enc->enc_lock); + + kfree(dpu_enc); +} + +void dpu_encoder_helper_split_config( + struct dpu_encoder_phys *phys_enc, + enum dpu_intf interface) +{ + struct dpu_encoder_virt *dpu_enc; + struct split_pipe_cfg cfg = { 0 }; + struct dpu_hw_mdp *hw_mdptop; + struct msm_display_info *disp_info; + + if (!phys_enc || !phys_enc->hw_mdptop || !phys_enc->parent) { + DPU_ERROR("invalid arg(s), encoder %d\n", phys_enc != 0); + return; + } + + dpu_enc = to_dpu_encoder_virt(phys_enc->parent); + hw_mdptop = phys_enc->hw_mdptop; + disp_info = &dpu_enc->disp_info; + + if (disp_info->intf_type != DRM_MODE_CONNECTOR_DSI) + return; + + /** + * disable split modes since encoder will be operating in as the only + * encoder, either for the entire use case in the case of, for example, + * single DSI, or for this frame in the case of left/right only partial + * update. + */ + if (phys_enc->split_role == ENC_ROLE_SOLO) { + if (hw_mdptop->ops.setup_split_pipe) + hw_mdptop->ops.setup_split_pipe(hw_mdptop, &cfg); + return; + } + + cfg.en = true; + cfg.mode = phys_enc->intf_mode; + cfg.intf = interface; + + if (cfg.en && phys_enc->ops.needs_single_flush && + phys_enc->ops.needs_single_flush(phys_enc)) + cfg.split_flush_en = true; + + if (phys_enc->split_role == ENC_ROLE_MASTER) { + DPU_DEBUG_ENC(dpu_enc, "enable %d\n", cfg.en); + + if (hw_mdptop->ops.setup_split_pipe) + hw_mdptop->ops.setup_split_pipe(hw_mdptop, &cfg); + } +} + +static void _dpu_encoder_adjust_mode(struct drm_connector *connector, + struct drm_display_mode *adj_mode) +{ + struct drm_display_mode *cur_mode; + + if (!connector || !adj_mode) + return; + + list_for_each_entry(cur_mode, &connector->modes, head) { + if (cur_mode->vdisplay == adj_mode->vdisplay && + cur_mode->hdisplay == adj_mode->hdisplay && + cur_mode->vrefresh == adj_mode->vrefresh) { + adj_mode->private = cur_mode->private; + adj_mode->private_flags |= cur_mode->private_flags; + } + } +} + +static struct msm_display_topology dpu_encoder_get_topology( + struct dpu_encoder_virt *dpu_enc, + struct dpu_kms *dpu_kms, + struct drm_display_mode *mode) +{ + struct msm_display_topology topology; + int i, intf_count = 0; + + for (i = 0; i < MAX_PHYS_ENCODERS_PER_VIRTUAL; i++) + if (dpu_enc->phys_encs[i]) + intf_count++; + + /* User split topology for width > 1080 */ + topology.num_lm = (mode->vdisplay > MAX_VDISPLAY_SPLIT) ? 2 : 1; + topology.num_enc = 0; + topology.num_intf = intf_count; + + return topology; +} +static int dpu_encoder_virt_atomic_check( + struct drm_encoder *drm_enc, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct dpu_encoder_virt *dpu_enc; + struct msm_drm_private *priv; + struct dpu_kms *dpu_kms; + const struct drm_display_mode *mode; + struct drm_display_mode *adj_mode; + struct msm_display_topology topology; + int i = 0; + int ret = 0; + + if (!drm_enc || !crtc_state || !conn_state) { + DPU_ERROR("invalid arg(s), drm_enc %d, crtc/conn state %d/%d\n", + drm_enc != 0, crtc_state != 0, conn_state != 0); + return -EINVAL; + } + + dpu_enc = to_dpu_encoder_virt(drm_enc); + DPU_DEBUG_ENC(dpu_enc, "\n"); + + priv = drm_enc->dev->dev_private; + dpu_kms = to_dpu_kms(priv->kms); + mode = &crtc_state->mode; + adj_mode = &crtc_state->adjusted_mode; + trace_dpu_enc_atomic_check(DRMID(drm_enc)); + + /* + * display drivers may populate private fields of the drm display mode + * structure while registering possible modes of a connector with DRM. + * These private fields are not populated back while DRM invokes + * the mode_set callbacks. This module retrieves and populates the + * private fields of the given mode. + */ + _dpu_encoder_adjust_mode(conn_state->connector, adj_mode); + + /* perform atomic check on the first physical encoder (master) */ + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys && phys->ops.atomic_check) + ret = phys->ops.atomic_check(phys, crtc_state, + conn_state); + else if (phys && phys->ops.mode_fixup) + if (!phys->ops.mode_fixup(phys, mode, adj_mode)) + ret = -EINVAL; + + if (ret) { + DPU_ERROR_ENC(dpu_enc, + "mode unsupported, phys idx %d\n", i); + break; + } + } + + topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode); + + /* Reserve dynamic resources now. Indicating AtomicTest phase */ + if (!ret) { + /* + * Avoid reserving resources when mode set is pending. Topology + * info may not be available to complete reservation. + */ + if (drm_atomic_crtc_needs_modeset(crtc_state) + && dpu_enc->mode_set_complete) { + ret = dpu_rm_reserve(&dpu_kms->rm, drm_enc, crtc_state, + conn_state, topology, true); + dpu_enc->mode_set_complete = false; + } + } + + if (!ret) + drm_mode_set_crtcinfo(adj_mode, 0); + + trace_dpu_enc_atomic_check_flags(DRMID(drm_enc), adj_mode->flags, + adj_mode->private_flags); + + return ret; +} + +static void _dpu_encoder_update_vsync_source(struct dpu_encoder_virt *dpu_enc, + struct msm_display_info *disp_info) +{ + struct dpu_vsync_source_cfg vsync_cfg = { 0 }; + struct msm_drm_private *priv; + struct dpu_kms *dpu_kms; + struct dpu_hw_mdp *hw_mdptop; + struct drm_encoder *drm_enc; + int i; + + if (!dpu_enc || !disp_info) { + DPU_ERROR("invalid param dpu_enc:%d or disp_info:%d\n", + dpu_enc != NULL, disp_info != NULL); + return; + } else if (dpu_enc->num_phys_encs > ARRAY_SIZE(dpu_enc->hw_pp)) { + DPU_ERROR("invalid num phys enc %d/%d\n", + dpu_enc->num_phys_encs, + (int) ARRAY_SIZE(dpu_enc->hw_pp)); + return; + } + + drm_enc = &dpu_enc->base; + /* this pointers are checked in virt_enable_helper */ + priv = drm_enc->dev->dev_private; + + dpu_kms = to_dpu_kms(priv->kms); + if (!dpu_kms) { + DPU_ERROR("invalid dpu_kms\n"); + return; + } + + hw_mdptop = dpu_kms->hw_mdp; + if (!hw_mdptop) { + DPU_ERROR("invalid mdptop\n"); + return; + } + + if (hw_mdptop->ops.setup_vsync_source && + disp_info->capabilities & MSM_DISPLAY_CAP_CMD_MODE) { + for (i = 0; i < dpu_enc->num_phys_encs; i++) + vsync_cfg.ppnumber[i] = dpu_enc->hw_pp[i]->idx; + + vsync_cfg.pp_count = dpu_enc->num_phys_encs; + if (disp_info->is_te_using_watchdog_timer) + vsync_cfg.vsync_source = DPU_VSYNC_SOURCE_WD_TIMER_0; + else + vsync_cfg.vsync_source = DPU_VSYNC0_SOURCE_GPIO; + + hw_mdptop->ops.setup_vsync_source(hw_mdptop, &vsync_cfg); + } +} + +static void _dpu_encoder_irq_control(struct drm_encoder *drm_enc, bool enable) +{ + struct dpu_encoder_virt *dpu_enc; + int i; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + + dpu_enc = to_dpu_encoder_virt(drm_enc); + + DPU_DEBUG_ENC(dpu_enc, "enable:%d\n", enable); + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys && phys->ops.irq_control) + phys->ops.irq_control(phys, enable); + } + +} + +static void _dpu_encoder_resource_control_helper(struct drm_encoder *drm_enc, + bool enable) +{ + struct msm_drm_private *priv; + struct dpu_kms *dpu_kms; + struct dpu_encoder_virt *dpu_enc; + + dpu_enc = to_dpu_encoder_virt(drm_enc); + priv = drm_enc->dev->dev_private; + dpu_kms = to_dpu_kms(priv->kms); + + trace_dpu_enc_rc_helper(DRMID(drm_enc), enable); + + if (!dpu_enc->cur_master) { + DPU_ERROR("encoder master not set\n"); + return; + } + + if (enable) { + /* enable DPU core clks */ + pm_runtime_get_sync(&dpu_kms->pdev->dev); + + /* enable all the irq */ + _dpu_encoder_irq_control(drm_enc, true); + + } else { + /* disable all the irq */ + _dpu_encoder_irq_control(drm_enc, false); + + /* disable DPU core clks */ + pm_runtime_put_sync(&dpu_kms->pdev->dev); + } + +} + +static int dpu_encoder_resource_control(struct drm_encoder *drm_enc, + u32 sw_event) +{ + struct dpu_encoder_virt *dpu_enc; + struct msm_drm_private *priv; + struct msm_drm_thread *disp_thread; + bool is_vid_mode = false; + + if (!drm_enc || !drm_enc->dev || !drm_enc->dev->dev_private || + !drm_enc->crtc) { + DPU_ERROR("invalid parameters\n"); + return -EINVAL; + } + dpu_enc = to_dpu_encoder_virt(drm_enc); + priv = drm_enc->dev->dev_private; + is_vid_mode = dpu_enc->disp_info.capabilities & + MSM_DISPLAY_CAP_VID_MODE; + + if (drm_enc->crtc->index >= ARRAY_SIZE(priv->disp_thread)) { + DPU_ERROR("invalid crtc index\n"); + return -EINVAL; + } + disp_thread = &priv->disp_thread[drm_enc->crtc->index]; + + /* + * when idle_pc is not supported, process only KICKOFF, STOP and MODESET + * events and return early for other events (ie wb display). + */ + if (!dpu_enc->idle_pc_supported && + (sw_event != DPU_ENC_RC_EVENT_KICKOFF && + sw_event != DPU_ENC_RC_EVENT_STOP && + sw_event != DPU_ENC_RC_EVENT_PRE_STOP)) + return 0; + + trace_dpu_enc_rc(DRMID(drm_enc), sw_event, dpu_enc->idle_pc_supported, + dpu_enc->rc_state, "begin"); + + switch (sw_event) { + case DPU_ENC_RC_EVENT_KICKOFF: + /* cancel delayed off work, if any */ + if (kthread_cancel_delayed_work_sync( + &dpu_enc->delayed_off_work)) + DPU_DEBUG_ENC(dpu_enc, "sw_event:%d, work cancelled\n", + sw_event); + + mutex_lock(&dpu_enc->rc_lock); + + /* return if the resource control is already in ON state */ + if (dpu_enc->rc_state == DPU_ENC_RC_STATE_ON) { + DRM_DEBUG_KMS("id;%u, sw_event:%d, rc in ON state\n", + DRMID(drm_enc), sw_event); + mutex_unlock(&dpu_enc->rc_lock); + return 0; + } else if (dpu_enc->rc_state != DPU_ENC_RC_STATE_OFF && + dpu_enc->rc_state != DPU_ENC_RC_STATE_IDLE) { + DRM_DEBUG_KMS("id;%u, sw_event:%d, rc in state %d\n", + DRMID(drm_enc), sw_event, + dpu_enc->rc_state); + mutex_unlock(&dpu_enc->rc_lock); + return -EINVAL; + } + + if (is_vid_mode && dpu_enc->rc_state == DPU_ENC_RC_STATE_IDLE) + _dpu_encoder_irq_control(drm_enc, true); + else + _dpu_encoder_resource_control_helper(drm_enc, true); + + dpu_enc->rc_state = DPU_ENC_RC_STATE_ON; + + trace_dpu_enc_rc(DRMID(drm_enc), sw_event, + dpu_enc->idle_pc_supported, dpu_enc->rc_state, + "kickoff"); + + mutex_unlock(&dpu_enc->rc_lock); + break; + + case DPU_ENC_RC_EVENT_FRAME_DONE: + /* + * mutex lock is not used as this event happens at interrupt + * context. And locking is not required as, the other events + * like KICKOFF and STOP does a wait-for-idle before executing + * the resource_control + */ + if (dpu_enc->rc_state != DPU_ENC_RC_STATE_ON) { + DRM_DEBUG_KMS("id:%d, sw_event:%d,rc:%d-unexpected\n", + DRMID(drm_enc), sw_event, + dpu_enc->rc_state); + return -EINVAL; + } + + /* + * schedule off work item only when there are no + * frames pending + */ + if (dpu_crtc_frame_pending(drm_enc->crtc) > 1) { + DRM_DEBUG_KMS("id:%d skip schedule work\n", + DRMID(drm_enc)); + return 0; + } + + kthread_queue_delayed_work( + &disp_thread->worker, + &dpu_enc->delayed_off_work, + msecs_to_jiffies(dpu_enc->idle_timeout)); + + trace_dpu_enc_rc(DRMID(drm_enc), sw_event, + dpu_enc->idle_pc_supported, dpu_enc->rc_state, + "frame done"); + break; + + case DPU_ENC_RC_EVENT_PRE_STOP: + /* cancel delayed off work, if any */ + if (kthread_cancel_delayed_work_sync( + &dpu_enc->delayed_off_work)) + DPU_DEBUG_ENC(dpu_enc, "sw_event:%d, work cancelled\n", + sw_event); + + mutex_lock(&dpu_enc->rc_lock); + + if (is_vid_mode && + dpu_enc->rc_state == DPU_ENC_RC_STATE_IDLE) { + _dpu_encoder_irq_control(drm_enc, true); + } + /* skip if is already OFF or IDLE, resources are off already */ + else if (dpu_enc->rc_state == DPU_ENC_RC_STATE_OFF || + dpu_enc->rc_state == DPU_ENC_RC_STATE_IDLE) { + DRM_DEBUG_KMS("id:%u, sw_event:%d, rc in %d state\n", + DRMID(drm_enc), sw_event, + dpu_enc->rc_state); + mutex_unlock(&dpu_enc->rc_lock); + return 0; + } + + dpu_enc->rc_state = DPU_ENC_RC_STATE_PRE_OFF; + + trace_dpu_enc_rc(DRMID(drm_enc), sw_event, + dpu_enc->idle_pc_supported, dpu_enc->rc_state, + "pre stop"); + + mutex_unlock(&dpu_enc->rc_lock); + break; + + case DPU_ENC_RC_EVENT_STOP: + mutex_lock(&dpu_enc->rc_lock); + + /* return if the resource control is already in OFF state */ + if (dpu_enc->rc_state == DPU_ENC_RC_STATE_OFF) { + DRM_DEBUG_KMS("id: %u, sw_event:%d, rc in OFF state\n", + DRMID(drm_enc), sw_event); + mutex_unlock(&dpu_enc->rc_lock); + return 0; + } else if (dpu_enc->rc_state == DPU_ENC_RC_STATE_ON) { + DRM_ERROR("id: %u, sw_event:%d, rc in state %d\n", + DRMID(drm_enc), sw_event, dpu_enc->rc_state); + mutex_unlock(&dpu_enc->rc_lock); + return -EINVAL; + } + + /** + * expect to arrive here only if in either idle state or pre-off + * and in IDLE state the resources are already disabled + */ + if (dpu_enc->rc_state == DPU_ENC_RC_STATE_PRE_OFF) + _dpu_encoder_resource_control_helper(drm_enc, false); + + dpu_enc->rc_state = DPU_ENC_RC_STATE_OFF; + + trace_dpu_enc_rc(DRMID(drm_enc), sw_event, + dpu_enc->idle_pc_supported, dpu_enc->rc_state, + "stop"); + + mutex_unlock(&dpu_enc->rc_lock); + break; + + case DPU_ENC_RC_EVENT_ENTER_IDLE: + mutex_lock(&dpu_enc->rc_lock); + + if (dpu_enc->rc_state != DPU_ENC_RC_STATE_ON) { + DRM_ERROR("id: %u, sw_event:%d, rc:%d !ON state\n", + DRMID(drm_enc), sw_event, dpu_enc->rc_state); + mutex_unlock(&dpu_enc->rc_lock); + return 0; + } + + /* + * if we are in ON but a frame was just kicked off, + * ignore the IDLE event, it's probably a stale timer event + */ + if (dpu_enc->frame_busy_mask[0]) { + DRM_ERROR("id:%u, sw_event:%d, rc:%d frame pending\n", + DRMID(drm_enc), sw_event, dpu_enc->rc_state); + mutex_unlock(&dpu_enc->rc_lock); + return 0; + } + + if (is_vid_mode) + _dpu_encoder_irq_control(drm_enc, false); + else + _dpu_encoder_resource_control_helper(drm_enc, false); + + dpu_enc->rc_state = DPU_ENC_RC_STATE_IDLE; + + trace_dpu_enc_rc(DRMID(drm_enc), sw_event, + dpu_enc->idle_pc_supported, dpu_enc->rc_state, + "idle"); + + mutex_unlock(&dpu_enc->rc_lock); + break; + + default: + DRM_ERROR("id:%u, unexpected sw_event: %d\n", DRMID(drm_enc), + sw_event); + trace_dpu_enc_rc(DRMID(drm_enc), sw_event, + dpu_enc->idle_pc_supported, dpu_enc->rc_state, + "error"); + break; + } + + trace_dpu_enc_rc(DRMID(drm_enc), sw_event, + dpu_enc->idle_pc_supported, dpu_enc->rc_state, + "end"); + return 0; +} + +static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc, + struct drm_display_mode *mode, + struct drm_display_mode *adj_mode) +{ + struct dpu_encoder_virt *dpu_enc; + struct msm_drm_private *priv; + struct dpu_kms *dpu_kms; + struct list_head *connector_list; + struct drm_connector *conn = NULL, *conn_iter; + struct dpu_rm_hw_iter pp_iter; + struct msm_display_topology topology; + enum dpu_rm_topology_name topology_name; + int i = 0, ret; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + + dpu_enc = to_dpu_encoder_virt(drm_enc); + DPU_DEBUG_ENC(dpu_enc, "\n"); + + priv = drm_enc->dev->dev_private; + dpu_kms = to_dpu_kms(priv->kms); + connector_list = &dpu_kms->dev->mode_config.connector_list; + + trace_dpu_enc_mode_set(DRMID(drm_enc)); + + list_for_each_entry(conn_iter, connector_list, head) + if (conn_iter->encoder == drm_enc) + conn = conn_iter; + + if (!conn) { + DPU_ERROR_ENC(dpu_enc, "failed to find attached connector\n"); + return; + } else if (!conn->state) { + DPU_ERROR_ENC(dpu_enc, "invalid connector state\n"); + return; + } + + topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode); + + /* Reserve dynamic resources now. Indicating non-AtomicTest phase */ + ret = dpu_rm_reserve(&dpu_kms->rm, drm_enc, drm_enc->crtc->state, + conn->state, topology, false); + if (ret) { + DPU_ERROR_ENC(dpu_enc, + "failed to reserve hw resources, %d\n", ret); + return; + } + + dpu_rm_init_hw_iter(&pp_iter, drm_enc->base.id, DPU_HW_BLK_PINGPONG); + for (i = 0; i < MAX_CHANNELS_PER_ENC; i++) { + dpu_enc->hw_pp[i] = NULL; + if (!dpu_rm_get_hw(&dpu_kms->rm, &pp_iter)) + break; + dpu_enc->hw_pp[i] = (struct dpu_hw_pingpong *) pp_iter.hw; + } + + topology_name = dpu_rm_get_topology_name(topology); + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys) { + if (!dpu_enc->hw_pp[i]) { + DPU_ERROR_ENC(dpu_enc, + "invalid pingpong block for the encoder\n"); + return; + } + phys->hw_pp = dpu_enc->hw_pp[i]; + phys->connector = conn->state->connector; + phys->topology_name = topology_name; + if (phys->ops.mode_set) + phys->ops.mode_set(phys, mode, adj_mode); + } + } + + dpu_enc->mode_set_complete = true; +} + +static void _dpu_encoder_virt_enable_helper(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + struct msm_drm_private *priv; + struct dpu_kms *dpu_kms; + + if (!drm_enc || !drm_enc->dev || !drm_enc->dev->dev_private) { + DPU_ERROR("invalid parameters\n"); + return; + } + + priv = drm_enc->dev->dev_private; + dpu_kms = to_dpu_kms(priv->kms); + if (!dpu_kms) { + DPU_ERROR("invalid dpu_kms\n"); + return; + } + + dpu_enc = to_dpu_encoder_virt(drm_enc); + if (!dpu_enc || !dpu_enc->cur_master) { + DPU_ERROR("invalid dpu encoder/master\n"); + return; + } + + if (dpu_enc->disp_info.intf_type == DRM_MODE_CONNECTOR_DisplayPort && + dpu_enc->cur_master->hw_mdptop && + dpu_enc->cur_master->hw_mdptop->ops.intf_audio_select) + dpu_enc->cur_master->hw_mdptop->ops.intf_audio_select( + dpu_enc->cur_master->hw_mdptop); + + if (dpu_enc->cur_master->hw_mdptop && + dpu_enc->cur_master->hw_mdptop->ops.reset_ubwc) + dpu_enc->cur_master->hw_mdptop->ops.reset_ubwc( + dpu_enc->cur_master->hw_mdptop, + dpu_kms->catalog); + + _dpu_encoder_update_vsync_source(dpu_enc, &dpu_enc->disp_info); +} + +void dpu_encoder_virt_restore(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + int i; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + dpu_enc = to_dpu_encoder_virt(drm_enc); + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys && (phys != dpu_enc->cur_master) && phys->ops.restore) + phys->ops.restore(phys); + } + + if (dpu_enc->cur_master && dpu_enc->cur_master->ops.restore) + dpu_enc->cur_master->ops.restore(dpu_enc->cur_master); + + _dpu_encoder_virt_enable_helper(drm_enc); +} + +static void dpu_encoder_virt_enable(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + int i, ret = 0; + struct drm_display_mode *cur_mode = NULL; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + dpu_enc = to_dpu_encoder_virt(drm_enc); + cur_mode = &dpu_enc->base.crtc->state->adjusted_mode; + + trace_dpu_enc_enable(DRMID(drm_enc), cur_mode->hdisplay, + cur_mode->vdisplay); + + dpu_enc->cur_master = NULL; + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys && phys->ops.is_master && phys->ops.is_master(phys)) { + DPU_DEBUG_ENC(dpu_enc, "master is now idx %d\n", i); + dpu_enc->cur_master = phys; + break; + } + } + + if (!dpu_enc->cur_master) { + DPU_ERROR("virt encoder has no master! num_phys %d\n", i); + return; + } + + ret = dpu_encoder_resource_control(drm_enc, DPU_ENC_RC_EVENT_KICKOFF); + if (ret) { + DPU_ERROR_ENC(dpu_enc, "dpu resource control failed: %d\n", + ret); + return; + } + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (!phys) + continue; + + if (phys != dpu_enc->cur_master) { + if (phys->ops.enable) + phys->ops.enable(phys); + } + + if (dpu_enc->misr_enable && (dpu_enc->disp_info.capabilities & + MSM_DISPLAY_CAP_VID_MODE) && phys->ops.setup_misr) + phys->ops.setup_misr(phys, true, + dpu_enc->misr_frame_count); + } + + if (dpu_enc->cur_master->ops.enable) + dpu_enc->cur_master->ops.enable(dpu_enc->cur_master); + + _dpu_encoder_virt_enable_helper(drm_enc); +} + +static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + struct msm_drm_private *priv; + struct dpu_kms *dpu_kms; + struct drm_display_mode *mode; + int i = 0; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } else if (!drm_enc->dev) { + DPU_ERROR("invalid dev\n"); + return; + } else if (!drm_enc->dev->dev_private) { + DPU_ERROR("invalid dev_private\n"); + return; + } + + mode = &drm_enc->crtc->state->adjusted_mode; + + dpu_enc = to_dpu_encoder_virt(drm_enc); + DPU_DEBUG_ENC(dpu_enc, "\n"); + + priv = drm_enc->dev->dev_private; + dpu_kms = to_dpu_kms(priv->kms); + + trace_dpu_enc_disable(DRMID(drm_enc)); + + /* wait for idle */ + dpu_encoder_wait_for_event(drm_enc, MSM_ENC_TX_COMPLETE); + + dpu_encoder_resource_control(drm_enc, DPU_ENC_RC_EVENT_PRE_STOP); + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys && phys->ops.disable) + phys->ops.disable(phys); + } + + /* after phys waits for frame-done, should be no more frames pending */ + if (atomic_xchg(&dpu_enc->frame_done_timeout, 0)) { + DPU_ERROR("enc%d timeout pending\n", drm_enc->base.id); + del_timer_sync(&dpu_enc->frame_done_timer); + } + + dpu_encoder_resource_control(drm_enc, DPU_ENC_RC_EVENT_STOP); + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + if (dpu_enc->phys_encs[i]) + dpu_enc->phys_encs[i]->connector = NULL; + } + + dpu_enc->cur_master = NULL; + + DPU_DEBUG_ENC(dpu_enc, "encoder disabled\n"); + + dpu_rm_release(&dpu_kms->rm, drm_enc); +} + +static enum dpu_intf dpu_encoder_get_intf(struct dpu_mdss_cfg *catalog, + enum dpu_intf_type type, u32 controller_id) +{ + int i = 0; + + for (i = 0; i < catalog->intf_count; i++) { + if (catalog->intf[i].type == type + && catalog->intf[i].controller_id == controller_id) { + return catalog->intf[i].id; + } + } + + return INTF_MAX; +} + +static void dpu_encoder_vblank_callback(struct drm_encoder *drm_enc, + struct dpu_encoder_phys *phy_enc) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + unsigned long lock_flags; + + if (!drm_enc || !phy_enc) + return; + + DPU_ATRACE_BEGIN("encoder_vblank_callback"); + dpu_enc = to_dpu_encoder_virt(drm_enc); + + spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags); + if (dpu_enc->crtc_vblank_cb) + dpu_enc->crtc_vblank_cb(dpu_enc->crtc_vblank_cb_data); + spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); + + atomic_inc(&phy_enc->vsync_cnt); + DPU_ATRACE_END("encoder_vblank_callback"); +} + +static void dpu_encoder_underrun_callback(struct drm_encoder *drm_enc, + struct dpu_encoder_phys *phy_enc) +{ + if (!phy_enc) + return; + + DPU_ATRACE_BEGIN("encoder_underrun_callback"); + atomic_inc(&phy_enc->underrun_cnt); + trace_dpu_enc_underrun_cb(DRMID(drm_enc), + atomic_read(&phy_enc->underrun_cnt)); + DPU_ATRACE_END("encoder_underrun_callback"); +} + +void dpu_encoder_register_vblank_callback(struct drm_encoder *drm_enc, + void (*vbl_cb)(void *), void *vbl_data) +{ + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); + unsigned long lock_flags; + bool enable; + int i; + + enable = vbl_cb ? true : false; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + trace_dpu_enc_vblank_cb(DRMID(drm_enc), enable); + + spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags); + dpu_enc->crtc_vblank_cb = vbl_cb; + dpu_enc->crtc_vblank_cb_data = vbl_data; + spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys && phys->ops.control_vblank_irq) + phys->ops.control_vblank_irq(phys, enable); + } +} + +void dpu_encoder_register_frame_event_callback(struct drm_encoder *drm_enc, + void (*frame_event_cb)(void *, u32 event), + void *frame_event_cb_data) +{ + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); + unsigned long lock_flags; + bool enable; + + enable = frame_event_cb ? true : false; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + trace_dpu_enc_frame_event_cb(DRMID(drm_enc), enable); + + spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags); + dpu_enc->crtc_frame_event_cb = frame_event_cb; + dpu_enc->crtc_frame_event_cb_data = frame_event_cb_data; + spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); +} + +static void dpu_encoder_frame_done_callback( + struct drm_encoder *drm_enc, + struct dpu_encoder_phys *ready_phys, u32 event) +{ + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); + unsigned int i; + + if (event & (DPU_ENCODER_FRAME_EVENT_DONE + | DPU_ENCODER_FRAME_EVENT_ERROR + | DPU_ENCODER_FRAME_EVENT_PANEL_DEAD)) { + + if (!dpu_enc->frame_busy_mask[0]) { + /** + * suppress frame_done without waiter, + * likely autorefresh + */ + trace_dpu_enc_frame_done_cb_not_busy(DRMID(drm_enc), + event, ready_phys->intf_idx); + return; + } + + /* One of the physical encoders has become idle */ + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + if (dpu_enc->phys_encs[i] == ready_phys) { + clear_bit(i, dpu_enc->frame_busy_mask); + trace_dpu_enc_frame_done_cb(DRMID(drm_enc), i, + dpu_enc->frame_busy_mask[0]); + } + } + + if (!dpu_enc->frame_busy_mask[0]) { + atomic_set(&dpu_enc->frame_done_timeout, 0); + del_timer(&dpu_enc->frame_done_timer); + + dpu_encoder_resource_control(drm_enc, + DPU_ENC_RC_EVENT_FRAME_DONE); + + if (dpu_enc->crtc_frame_event_cb) + dpu_enc->crtc_frame_event_cb( + dpu_enc->crtc_frame_event_cb_data, + event); + } + } else { + if (dpu_enc->crtc_frame_event_cb) + dpu_enc->crtc_frame_event_cb( + dpu_enc->crtc_frame_event_cb_data, event); + } +} + +static void dpu_encoder_off_work(struct kthread_work *work) +{ + struct dpu_encoder_virt *dpu_enc = container_of(work, + struct dpu_encoder_virt, delayed_off_work.work); + + if (!dpu_enc) { + DPU_ERROR("invalid dpu encoder\n"); + return; + } + + dpu_encoder_resource_control(&dpu_enc->base, + DPU_ENC_RC_EVENT_ENTER_IDLE); + + dpu_encoder_frame_done_callback(&dpu_enc->base, NULL, + DPU_ENCODER_FRAME_EVENT_IDLE); +} + +/** + * _dpu_encoder_trigger_flush - trigger flush for a physical encoder + * drm_enc: Pointer to drm encoder structure + * phys: Pointer to physical encoder structure + * extra_flush_bits: Additional bit mask to include in flush trigger + */ +static inline void _dpu_encoder_trigger_flush(struct drm_encoder *drm_enc, + struct dpu_encoder_phys *phys, uint32_t extra_flush_bits) +{ + struct dpu_hw_ctl *ctl; + int pending_kickoff_cnt; + u32 ret = UINT_MAX; + + if (!drm_enc || !phys) { + DPU_ERROR("invalid argument(s), drm_enc %d, phys_enc %d\n", + drm_enc != 0, phys != 0); + return; + } + + if (!phys->hw_pp) { + DPU_ERROR("invalid pingpong hw\n"); + return; + } + + ctl = phys->hw_ctl; + if (!ctl || !ctl->ops.trigger_flush) { + DPU_ERROR("missing trigger cb\n"); + return; + } + + pending_kickoff_cnt = dpu_encoder_phys_inc_pending(phys); + + if (extra_flush_bits && ctl->ops.update_pending_flush) + ctl->ops.update_pending_flush(ctl, extra_flush_bits); + + ctl->ops.trigger_flush(ctl); + + if (ctl->ops.get_pending_flush) + ret = ctl->ops.get_pending_flush(ctl); + + trace_dpu_enc_trigger_flush(DRMID(drm_enc), phys->intf_idx, + pending_kickoff_cnt, ctl->idx, ret); +} + +/** + * _dpu_encoder_trigger_start - trigger start for a physical encoder + * phys: Pointer to physical encoder structure + */ +static inline void _dpu_encoder_trigger_start(struct dpu_encoder_phys *phys) +{ + if (!phys) { + DPU_ERROR("invalid argument(s)\n"); + return; + } + + if (!phys->hw_pp) { + DPU_ERROR("invalid pingpong hw\n"); + return; + } + + if (phys->ops.trigger_start && phys->enable_state != DPU_ENC_DISABLED) + phys->ops.trigger_start(phys); +} + +void dpu_encoder_helper_trigger_start(struct dpu_encoder_phys *phys_enc) +{ + struct dpu_hw_ctl *ctl; + + if (!phys_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + + ctl = phys_enc->hw_ctl; + if (ctl && ctl->ops.trigger_start) { + ctl->ops.trigger_start(ctl); + trace_dpu_enc_trigger_start(DRMID(phys_enc->parent), ctl->idx); + } +} + +static int dpu_encoder_helper_wait_event_timeout( + int32_t drm_id, + int32_t hw_id, + struct dpu_encoder_wait_info *info) +{ + int rc = 0; + s64 expected_time = ktime_to_ms(ktime_get()) + info->timeout_ms; + s64 jiffies = msecs_to_jiffies(info->timeout_ms); + s64 time; + + do { + rc = wait_event_timeout(*(info->wq), + atomic_read(info->atomic_cnt) == 0, jiffies); + time = ktime_to_ms(ktime_get()); + + trace_dpu_enc_wait_event_timeout(drm_id, hw_id, rc, time, + expected_time, + atomic_read(info->atomic_cnt)); + /* If we timed out, counter is valid and time is less, wait again */ + } while (atomic_read(info->atomic_cnt) && (rc == 0) && + (time < expected_time)); + + return rc; +} + +void dpu_encoder_helper_hw_reset(struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_virt *dpu_enc; + struct dpu_hw_ctl *ctl; + int rc; + + if (!phys_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + dpu_enc = to_dpu_encoder_virt(phys_enc->parent); + ctl = phys_enc->hw_ctl; + + if (!ctl || !ctl->ops.reset) + return; + + DRM_DEBUG_KMS("id:%u ctl %d reset\n", DRMID(phys_enc->parent), + ctl->idx); + + rc = ctl->ops.reset(ctl); + if (rc) { + DPU_ERROR_ENC(dpu_enc, "ctl %d reset failure\n", ctl->idx); + dpu_dbg_dump(false, __func__, true, true); + } + + phys_enc->enable_state = DPU_ENC_ENABLED; +} + +/** + * _dpu_encoder_kickoff_phys - handle physical encoder kickoff + * Iterate through the physical encoders and perform consolidated flush + * and/or control start triggering as needed. This is done in the virtual + * encoder rather than the individual physical ones in order to handle + * use cases that require visibility into multiple physical encoders at + * a time. + * dpu_enc: Pointer to virtual encoder structure + */ +static void _dpu_encoder_kickoff_phys(struct dpu_encoder_virt *dpu_enc) +{ + struct dpu_hw_ctl *ctl; + uint32_t i, pending_flush; + unsigned long lock_flags; + + if (!dpu_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + + pending_flush = 0x0; + + /* update pending counts and trigger kickoff ctl flush atomically */ + spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags); + + /* don't perform flush/start operations for slave encoders */ + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (!phys || phys->enable_state == DPU_ENC_DISABLED) + continue; + + ctl = phys->hw_ctl; + if (!ctl) + continue; + + if (phys->split_role != ENC_ROLE_SLAVE) + set_bit(i, dpu_enc->frame_busy_mask); + if (!phys->ops.needs_single_flush || + !phys->ops.needs_single_flush(phys)) + _dpu_encoder_trigger_flush(&dpu_enc->base, phys, 0x0); + else if (ctl->ops.get_pending_flush) + pending_flush |= ctl->ops.get_pending_flush(ctl); + } + + /* for split flush, combine pending flush masks and send to master */ + if (pending_flush && dpu_enc->cur_master) { + _dpu_encoder_trigger_flush( + &dpu_enc->base, + dpu_enc->cur_master, + pending_flush); + } + + _dpu_encoder_trigger_start(dpu_enc->cur_master); + + spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); +} + +void dpu_encoder_trigger_kickoff_pending(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc; + struct dpu_encoder_phys *phys; + unsigned int i; + struct dpu_hw_ctl *ctl; + struct msm_display_info *disp_info; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + dpu_enc = to_dpu_encoder_virt(drm_enc); + disp_info = &dpu_enc->disp_info; + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + phys = dpu_enc->phys_encs[i]; + + if (phys && phys->hw_ctl) { + ctl = phys->hw_ctl; + if (ctl->ops.clear_pending_flush) + ctl->ops.clear_pending_flush(ctl); + + /* update only for command mode primary ctl */ + if ((phys == dpu_enc->cur_master) && + (disp_info->capabilities & MSM_DISPLAY_CAP_CMD_MODE) + && ctl->ops.trigger_pending) + ctl->ops.trigger_pending(ctl); + } + } +} + +static u32 _dpu_encoder_calculate_linetime(struct dpu_encoder_virt *dpu_enc, + struct drm_display_mode *mode) +{ + u64 pclk_rate; + u32 pclk_period; + u32 line_time; + + /* + * For linetime calculation, only operate on master encoder. + */ + if (!dpu_enc->cur_master) + return 0; + + if (!dpu_enc->cur_master->ops.get_line_count) { + DPU_ERROR("get_line_count function not defined\n"); + return 0; + } + + pclk_rate = mode->clock; /* pixel clock in kHz */ + if (pclk_rate == 0) { + DPU_ERROR("pclk is 0, cannot calculate line time\n"); + return 0; + } + + pclk_period = DIV_ROUND_UP_ULL(1000000000ull, pclk_rate); + if (pclk_period == 0) { + DPU_ERROR("pclk period is 0\n"); + return 0; + } + + /* + * Line time calculation based on Pixel clock and HTOTAL. + * Final unit is in ns. + */ + line_time = (pclk_period * mode->htotal) / 1000; + if (line_time == 0) { + DPU_ERROR("line time calculation is 0\n"); + return 0; + } + + DPU_DEBUG_ENC(dpu_enc, + "clk_rate=%lldkHz, clk_period=%d, linetime=%dns\n", + pclk_rate, pclk_period, line_time); + + return line_time; +} + +static int _dpu_encoder_wakeup_time(struct drm_encoder *drm_enc, + ktime_t *wakeup_time) +{ + struct drm_display_mode *mode; + struct dpu_encoder_virt *dpu_enc; + u32 cur_line; + u32 line_time; + u32 vtotal, time_to_vsync; + ktime_t cur_time; + + dpu_enc = to_dpu_encoder_virt(drm_enc); + + if (!drm_enc->crtc || !drm_enc->crtc->state) { + DPU_ERROR("crtc/crtc state object is NULL\n"); + return -EINVAL; + } + mode = &drm_enc->crtc->state->adjusted_mode; + + line_time = _dpu_encoder_calculate_linetime(dpu_enc, mode); + if (!line_time) + return -EINVAL; + + cur_line = dpu_enc->cur_master->ops.get_line_count(dpu_enc->cur_master); + + vtotal = mode->vtotal; + if (cur_line >= vtotal) + time_to_vsync = line_time * vtotal; + else + time_to_vsync = line_time * (vtotal - cur_line); + + if (time_to_vsync == 0) { + DPU_ERROR("time to vsync should not be zero, vtotal=%d\n", + vtotal); + return -EINVAL; + } + + cur_time = ktime_get(); + *wakeup_time = ktime_add_ns(cur_time, time_to_vsync); + + DPU_DEBUG_ENC(dpu_enc, + "cur_line=%u vtotal=%u time_to_vsync=%u, cur_time=%lld, wakeup_time=%lld\n", + cur_line, vtotal, time_to_vsync, + ktime_to_ms(cur_time), + ktime_to_ms(*wakeup_time)); + return 0; +} + +static void dpu_encoder_vsync_event_handler(struct timer_list *t) +{ + struct dpu_encoder_virt *dpu_enc = from_timer(dpu_enc, t, + vsync_event_timer); + struct drm_encoder *drm_enc = &dpu_enc->base; + struct msm_drm_private *priv; + struct msm_drm_thread *event_thread; + + if (!drm_enc->dev || !drm_enc->dev->dev_private || + !drm_enc->crtc) { + DPU_ERROR("invalid parameters\n"); + return; + } + + priv = drm_enc->dev->dev_private; + + if (drm_enc->crtc->index >= ARRAY_SIZE(priv->event_thread)) { + DPU_ERROR("invalid crtc index\n"); + return; + } + event_thread = &priv->event_thread[drm_enc->crtc->index]; + if (!event_thread) { + DPU_ERROR("event_thread not found for crtc:%d\n", + drm_enc->crtc->index); + return; + } + + del_timer(&dpu_enc->vsync_event_timer); +} + +static void dpu_encoder_vsync_event_work_handler(struct kthread_work *work) +{ + struct dpu_encoder_virt *dpu_enc = container_of(work, + struct dpu_encoder_virt, vsync_event_work); + ktime_t wakeup_time; + + if (!dpu_enc) { + DPU_ERROR("invalid dpu encoder\n"); + return; + } + + if (_dpu_encoder_wakeup_time(&dpu_enc->base, &wakeup_time)) + return; + + trace_dpu_enc_vsync_event_work(DRMID(&dpu_enc->base), wakeup_time); + mod_timer(&dpu_enc->vsync_event_timer, + nsecs_to_jiffies(ktime_to_ns(wakeup_time))); +} + +void dpu_encoder_prepare_for_kickoff(struct drm_encoder *drm_enc, + struct dpu_encoder_kickoff_params *params) +{ + struct dpu_encoder_virt *dpu_enc; + struct dpu_encoder_phys *phys; + bool needs_hw_reset = false; + unsigned int i; + + if (!drm_enc || !params) { + DPU_ERROR("invalid args\n"); + return; + } + dpu_enc = to_dpu_encoder_virt(drm_enc); + + trace_dpu_enc_prepare_kickoff(DRMID(drm_enc)); + + /* prepare for next kickoff, may include waiting on previous kickoff */ + DPU_ATRACE_BEGIN("enc_prepare_for_kickoff"); + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + phys = dpu_enc->phys_encs[i]; + if (phys) { + if (phys->ops.prepare_for_kickoff) + phys->ops.prepare_for_kickoff(phys, params); + if (phys->enable_state == DPU_ENC_ERR_NEEDS_HW_RESET) + needs_hw_reset = true; + } + } + DPU_ATRACE_END("enc_prepare_for_kickoff"); + + dpu_encoder_resource_control(drm_enc, DPU_ENC_RC_EVENT_KICKOFF); + + /* if any phys needs reset, reset all phys, in-order */ + if (needs_hw_reset) { + trace_dpu_enc_prepare_kickoff_reset(DRMID(drm_enc)); + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + phys = dpu_enc->phys_encs[i]; + if (phys && phys->ops.hw_reset) + phys->ops.hw_reset(phys); + } + } +} + +void dpu_encoder_kickoff(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc; + struct dpu_encoder_phys *phys; + ktime_t wakeup_time; + unsigned int i; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + DPU_ATRACE_BEGIN("encoder_kickoff"); + dpu_enc = to_dpu_encoder_virt(drm_enc); + + trace_dpu_enc_kickoff(DRMID(drm_enc)); + + atomic_set(&dpu_enc->frame_done_timeout, + DPU_FRAME_DONE_TIMEOUT * 1000 / + drm_enc->crtc->state->adjusted_mode.vrefresh); + mod_timer(&dpu_enc->frame_done_timer, jiffies + + ((atomic_read(&dpu_enc->frame_done_timeout) * HZ) / 1000)); + + /* All phys encs are ready to go, trigger the kickoff */ + _dpu_encoder_kickoff_phys(dpu_enc); + + /* allow phys encs to handle any post-kickoff business */ + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + phys = dpu_enc->phys_encs[i]; + if (phys && phys->ops.handle_post_kickoff) + phys->ops.handle_post_kickoff(phys); + } + + if (dpu_enc->disp_info.intf_type == DRM_MODE_CONNECTOR_DSI && + !_dpu_encoder_wakeup_time(drm_enc, &wakeup_time)) { + trace_dpu_enc_early_kickoff(DRMID(drm_enc), + ktime_to_ms(wakeup_time)); + mod_timer(&dpu_enc->vsync_event_timer, + nsecs_to_jiffies(ktime_to_ns(wakeup_time))); + } + + DPU_ATRACE_END("encoder_kickoff"); +} + +void dpu_encoder_prepare_commit(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc; + struct dpu_encoder_phys *phys; + int i; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return; + } + dpu_enc = to_dpu_encoder_virt(drm_enc); + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + phys = dpu_enc->phys_encs[i]; + if (phys && phys->ops.prepare_commit) + phys->ops.prepare_commit(phys); + } +} + +#ifdef CONFIG_DEBUG_FS +static int _dpu_encoder_status_show(struct seq_file *s, void *data) +{ + struct dpu_encoder_virt *dpu_enc; + int i; + + if (!s || !s->private) + return -EINVAL; + + dpu_enc = s->private; + + mutex_lock(&dpu_enc->enc_lock); + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (!phys) + continue; + + seq_printf(s, "intf:%d vsync:%8d underrun:%8d ", + phys->intf_idx - INTF_0, + atomic_read(&phys->vsync_cnt), + atomic_read(&phys->underrun_cnt)); + + switch (phys->intf_mode) { + case INTF_MODE_VIDEO: + seq_puts(s, "mode: video\n"); + break; + case INTF_MODE_CMD: + seq_puts(s, "mode: command\n"); + break; + default: + seq_puts(s, "mode: ???\n"); + break; + } + } + mutex_unlock(&dpu_enc->enc_lock); + + return 0; +} + +static int _dpu_encoder_debugfs_status_open(struct inode *inode, + struct file *file) +{ + return single_open(file, _dpu_encoder_status_show, inode->i_private); +} + +static ssize_t _dpu_encoder_misr_setup(struct file *file, + const char __user *user_buf, size_t count, loff_t *ppos) +{ + struct dpu_encoder_virt *dpu_enc; + int i = 0, rc; + char buf[MISR_BUFF_SIZE + 1]; + size_t buff_copy; + u32 frame_count, enable; + + if (!file || !file->private_data) + return -EINVAL; + + dpu_enc = file->private_data; + + buff_copy = min_t(size_t, count, MISR_BUFF_SIZE); + if (copy_from_user(buf, user_buf, buff_copy)) + return -EINVAL; + + buf[buff_copy] = 0; /* end of string */ + + if (sscanf(buf, "%u %u", &enable, &frame_count) != 2) + return -EINVAL; + + rc = _dpu_encoder_power_enable(dpu_enc, true); + if (rc) + return rc; + + mutex_lock(&dpu_enc->enc_lock); + dpu_enc->misr_enable = enable; + dpu_enc->misr_frame_count = frame_count; + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (!phys || !phys->ops.setup_misr) + continue; + + phys->ops.setup_misr(phys, enable, frame_count); + } + mutex_unlock(&dpu_enc->enc_lock); + _dpu_encoder_power_enable(dpu_enc, false); + + return count; +} + +static ssize_t _dpu_encoder_misr_read(struct file *file, + char __user *user_buff, size_t count, loff_t *ppos) +{ + struct dpu_encoder_virt *dpu_enc; + int i = 0, len = 0; + char buf[MISR_BUFF_SIZE + 1] = {'\0'}; + int rc; + + if (*ppos) + return 0; + + if (!file || !file->private_data) + return -EINVAL; + + dpu_enc = file->private_data; + + rc = _dpu_encoder_power_enable(dpu_enc, true); + if (rc) + return rc; + + mutex_lock(&dpu_enc->enc_lock); + if (!dpu_enc->misr_enable) { + len += snprintf(buf + len, MISR_BUFF_SIZE - len, + "disabled\n"); + goto buff_check; + } else if (dpu_enc->disp_info.capabilities & + ~MSM_DISPLAY_CAP_VID_MODE) { + len += snprintf(buf + len, MISR_BUFF_SIZE - len, + "unsupported\n"); + goto buff_check; + } + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (!phys || !phys->ops.collect_misr) + continue; + + len += snprintf(buf + len, MISR_BUFF_SIZE - len, + "Intf idx:%d\n", phys->intf_idx - INTF_0); + len += snprintf(buf + len, MISR_BUFF_SIZE - len, "0x%x\n", + phys->ops.collect_misr(phys)); + } + +buff_check: + if (count <= len) { + len = 0; + goto end; + } + + if (copy_to_user(user_buff, buf, len)) { + len = -EFAULT; + goto end; + } + + *ppos += len; /* increase offset */ + +end: + mutex_unlock(&dpu_enc->enc_lock); + _dpu_encoder_power_enable(dpu_enc, false); + return len; +} + +static int _dpu_encoder_init_debugfs(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc; + struct msm_drm_private *priv; + struct dpu_kms *dpu_kms; + int i; + + static const struct file_operations debugfs_status_fops = { + .open = _dpu_encoder_debugfs_status_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + }; + + static const struct file_operations debugfs_misr_fops = { + .open = simple_open, + .read = _dpu_encoder_misr_read, + .write = _dpu_encoder_misr_setup, + }; + + char name[DPU_NAME_SIZE]; + + if (!drm_enc || !drm_enc->dev || !drm_enc->dev->dev_private) { + DPU_ERROR("invalid encoder or kms\n"); + return -EINVAL; + } + + dpu_enc = to_dpu_encoder_virt(drm_enc); + priv = drm_enc->dev->dev_private; + dpu_kms = to_dpu_kms(priv->kms); + + snprintf(name, DPU_NAME_SIZE, "encoder%u", drm_enc->base.id); + + /* create overall sub-directory for the encoder */ + dpu_enc->debugfs_root = debugfs_create_dir(name, + drm_enc->dev->primary->debugfs_root); + if (!dpu_enc->debugfs_root) + return -ENOMEM; + + /* don't error check these */ + debugfs_create_file("status", 0600, + dpu_enc->debugfs_root, dpu_enc, &debugfs_status_fops); + + debugfs_create_file("misr_data", 0600, + dpu_enc->debugfs_root, dpu_enc, &debugfs_misr_fops); + + for (i = 0; i < dpu_enc->num_phys_encs; i++) + if (dpu_enc->phys_encs[i] && + dpu_enc->phys_encs[i]->ops.late_register) + dpu_enc->phys_encs[i]->ops.late_register( + dpu_enc->phys_encs[i], + dpu_enc->debugfs_root); + + return 0; +} + +static void _dpu_encoder_destroy_debugfs(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc; + + if (!drm_enc) + return; + + dpu_enc = to_dpu_encoder_virt(drm_enc); + debugfs_remove_recursive(dpu_enc->debugfs_root); +} +#else +static int _dpu_encoder_init_debugfs(struct drm_encoder *drm_enc) +{ + return 0; +} + +static void _dpu_encoder_destroy_debugfs(struct drm_encoder *drm_enc) +{ +} +#endif + +static int dpu_encoder_late_register(struct drm_encoder *encoder) +{ + return _dpu_encoder_init_debugfs(encoder); +} + +static void dpu_encoder_early_unregister(struct drm_encoder *encoder) +{ + _dpu_encoder_destroy_debugfs(encoder); +} + +static int dpu_encoder_virt_add_phys_encs( + u32 display_caps, + struct dpu_encoder_virt *dpu_enc, + struct dpu_enc_phys_init_params *params) +{ + struct dpu_encoder_phys *enc = NULL; + + DPU_DEBUG_ENC(dpu_enc, "\n"); + + /* + * We may create up to NUM_PHYS_ENCODER_TYPES physical encoder types + * in this function, check up-front. + */ + if (dpu_enc->num_phys_encs + NUM_PHYS_ENCODER_TYPES >= + ARRAY_SIZE(dpu_enc->phys_encs)) { + DPU_ERROR_ENC(dpu_enc, "too many physical encoders %d\n", + dpu_enc->num_phys_encs); + return -EINVAL; + } + + if (display_caps & MSM_DISPLAY_CAP_VID_MODE) { + enc = dpu_encoder_phys_vid_init(params); + + if (IS_ERR_OR_NULL(enc)) { + DPU_ERROR_ENC(dpu_enc, "failed to init vid enc: %ld\n", + PTR_ERR(enc)); + return enc == 0 ? -EINVAL : PTR_ERR(enc); + } + + dpu_enc->phys_encs[dpu_enc->num_phys_encs] = enc; + ++dpu_enc->num_phys_encs; + } + + if (display_caps & MSM_DISPLAY_CAP_CMD_MODE) { + enc = dpu_encoder_phys_cmd_init(params); + + if (IS_ERR_OR_NULL(enc)) { + DPU_ERROR_ENC(dpu_enc, "failed to init cmd enc: %ld\n", + PTR_ERR(enc)); + return enc == 0 ? -EINVAL : PTR_ERR(enc); + } + + dpu_enc->phys_encs[dpu_enc->num_phys_encs] = enc; + ++dpu_enc->num_phys_encs; + } + + return 0; +} + +static const struct dpu_encoder_virt_ops dpu_encoder_parent_ops = { + .handle_vblank_virt = dpu_encoder_vblank_callback, + .handle_underrun_virt = dpu_encoder_underrun_callback, + .handle_frame_done = dpu_encoder_frame_done_callback, +}; + +static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc, + struct dpu_kms *dpu_kms, + struct msm_display_info *disp_info, + int *drm_enc_mode) +{ + int ret = 0; + int i = 0; + enum dpu_intf_type intf_type; + struct dpu_enc_phys_init_params phys_params; + + if (!dpu_enc || !dpu_kms) { + DPU_ERROR("invalid arg(s), enc %d kms %d\n", + dpu_enc != 0, dpu_kms != 0); + return -EINVAL; + } + + memset(&phys_params, 0, sizeof(phys_params)); + phys_params.dpu_kms = dpu_kms; + phys_params.parent = &dpu_enc->base; + phys_params.parent_ops = &dpu_encoder_parent_ops; + phys_params.enc_spinlock = &dpu_enc->enc_spinlock; + + DPU_DEBUG("\n"); + + if (disp_info->intf_type == DRM_MODE_CONNECTOR_DSI) { + *drm_enc_mode = DRM_MODE_ENCODER_DSI; + intf_type = INTF_DSI; + } else if (disp_info->intf_type == DRM_MODE_CONNECTOR_HDMIA) { + *drm_enc_mode = DRM_MODE_ENCODER_TMDS; + intf_type = INTF_HDMI; + } else if (disp_info->intf_type == DRM_MODE_CONNECTOR_DisplayPort) { + *drm_enc_mode = DRM_MODE_ENCODER_TMDS; + intf_type = INTF_DP; + } else { + DPU_ERROR_ENC(dpu_enc, "unsupported display interface type\n"); + return -EINVAL; + } + + WARN_ON(disp_info->num_of_h_tiles < 1); + + dpu_enc->display_num_of_h_tiles = disp_info->num_of_h_tiles; + + DPU_DEBUG("dsi_info->num_of_h_tiles %d\n", disp_info->num_of_h_tiles); + + if ((disp_info->capabilities & MSM_DISPLAY_CAP_CMD_MODE) || + (disp_info->capabilities & MSM_DISPLAY_CAP_VID_MODE)) + dpu_enc->idle_pc_supported = + dpu_kms->catalog->caps->has_idle_pc; + + mutex_lock(&dpu_enc->enc_lock); + for (i = 0; i < disp_info->num_of_h_tiles && !ret; i++) { + /* + * Left-most tile is at index 0, content is controller id + * h_tile_instance_ids[2] = {0, 1}; DSI0 = left, DSI1 = right + * h_tile_instance_ids[2] = {1, 0}; DSI1 = left, DSI0 = right + */ + u32 controller_id = disp_info->h_tile_instance[i]; + + if (disp_info->num_of_h_tiles > 1) { + if (i == 0) + phys_params.split_role = ENC_ROLE_MASTER; + else + phys_params.split_role = ENC_ROLE_SLAVE; + } else { + phys_params.split_role = ENC_ROLE_SOLO; + } + + DPU_DEBUG("h_tile_instance %d = %d, split_role %d\n", + i, controller_id, phys_params.split_role); + + phys_params.intf_idx = dpu_encoder_get_intf(dpu_kms->catalog, + intf_type, + controller_id); + if (phys_params.intf_idx == INTF_MAX) { + DPU_ERROR_ENC(dpu_enc, "could not get intf: type %d, id %d\n", + intf_type, controller_id); + ret = -EINVAL; + } + + if (!ret) { + ret = dpu_encoder_virt_add_phys_encs(disp_info->capabilities, + dpu_enc, + &phys_params); + if (ret) + DPU_ERROR_ENC(dpu_enc, "failed to add phys encs\n"); + } + } + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys) { + atomic_set(&phys->vsync_cnt, 0); + atomic_set(&phys->underrun_cnt, 0); + } + } + mutex_unlock(&dpu_enc->enc_lock); + + return ret; +} + +static void dpu_encoder_frame_done_timeout(struct timer_list *t) +{ + struct dpu_encoder_virt *dpu_enc = from_timer(dpu_enc, t, + frame_done_timer); + struct drm_encoder *drm_enc = &dpu_enc->base; + struct msm_drm_private *priv; + u32 event; + + if (!drm_enc->dev || !drm_enc->dev->dev_private) { + DPU_ERROR("invalid parameters\n"); + return; + } + priv = drm_enc->dev->dev_private; + + if (!dpu_enc->frame_busy_mask[0] || !dpu_enc->crtc_frame_event_cb) { + DRM_DEBUG_KMS("id:%u invalid timeout frame_busy_mask=%lu\n", + DRMID(drm_enc), dpu_enc->frame_busy_mask[0]); + return; + } else if (!atomic_xchg(&dpu_enc->frame_done_timeout, 0)) { + DRM_DEBUG_KMS("id:%u invalid timeout\n", DRMID(drm_enc)); + return; + } + + DPU_ERROR_ENC(dpu_enc, "frame done timeout\n"); + + event = DPU_ENCODER_FRAME_EVENT_ERROR; + trace_dpu_enc_frame_done_timeout(DRMID(drm_enc), event); + dpu_enc->crtc_frame_event_cb(dpu_enc->crtc_frame_event_cb_data, event); +} + +static const struct drm_encoder_helper_funcs dpu_encoder_helper_funcs = { + .mode_set = dpu_encoder_virt_mode_set, + .disable = dpu_encoder_virt_disable, + .enable = dpu_kms_encoder_enable, + .atomic_check = dpu_encoder_virt_atomic_check, + + /* This is called by dpu_kms_encoder_enable */ + .commit = dpu_encoder_virt_enable, +}; + +static const struct drm_encoder_funcs dpu_encoder_funcs = { + .destroy = dpu_encoder_destroy, + .late_register = dpu_encoder_late_register, + .early_unregister = dpu_encoder_early_unregister, +}; + +int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc, + struct msm_display_info *disp_info) +{ + struct msm_drm_private *priv = dev->dev_private; + struct dpu_kms *dpu_kms = to_dpu_kms(priv->kms); + struct drm_encoder *drm_enc = NULL; + struct dpu_encoder_virt *dpu_enc = NULL; + int drm_enc_mode = DRM_MODE_ENCODER_NONE; + int ret = 0; + + dpu_enc = to_dpu_encoder_virt(enc); + + mutex_init(&dpu_enc->enc_lock); + ret = dpu_encoder_setup_display(dpu_enc, dpu_kms, disp_info, + &drm_enc_mode); + if (ret) + goto fail; + + dpu_enc->cur_master = NULL; + spin_lock_init(&dpu_enc->enc_spinlock); + + atomic_set(&dpu_enc->frame_done_timeout, 0); + timer_setup(&dpu_enc->frame_done_timer, + dpu_encoder_frame_done_timeout, 0); + + if (disp_info->intf_type == DRM_MODE_CONNECTOR_DSI) + timer_setup(&dpu_enc->vsync_event_timer, + dpu_encoder_vsync_event_handler, + 0); + + + mutex_init(&dpu_enc->rc_lock); + kthread_init_delayed_work(&dpu_enc->delayed_off_work, + dpu_encoder_off_work); + dpu_enc->idle_timeout = IDLE_TIMEOUT; + + kthread_init_work(&dpu_enc->vsync_event_work, + dpu_encoder_vsync_event_work_handler); + + memcpy(&dpu_enc->disp_info, disp_info, sizeof(*disp_info)); + + DPU_DEBUG_ENC(dpu_enc, "created\n"); + + return ret; + +fail: + DPU_ERROR("failed to create encoder\n"); + if (drm_enc) + dpu_encoder_destroy(drm_enc); + + return ret; + + +} + +struct drm_encoder *dpu_encoder_init(struct drm_device *dev, + int drm_enc_mode) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + int rc = 0; + + dpu_enc = devm_kzalloc(dev->dev, sizeof(*dpu_enc), GFP_KERNEL); + if (!dpu_enc) + return ERR_PTR(ENOMEM); + + rc = drm_encoder_init(dev, &dpu_enc->base, &dpu_encoder_funcs, + drm_enc_mode, NULL); + if (rc) { + devm_kfree(dev->dev, dpu_enc); + return ERR_PTR(rc); + } + + drm_encoder_helper_add(&dpu_enc->base, &dpu_encoder_helper_funcs); + + return &dpu_enc->base; +} + +int dpu_encoder_wait_for_event(struct drm_encoder *drm_enc, + enum msm_event_wait event) +{ + int (*fn_wait)(struct dpu_encoder_phys *phys_enc) = NULL; + struct dpu_encoder_virt *dpu_enc = NULL; + int i, ret = 0; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return -EINVAL; + } + dpu_enc = to_dpu_encoder_virt(drm_enc); + DPU_DEBUG_ENC(dpu_enc, "\n"); + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + if (!phys) + continue; + + switch (event) { + case MSM_ENC_COMMIT_DONE: + fn_wait = phys->ops.wait_for_commit_done; + break; + case MSM_ENC_TX_COMPLETE: + fn_wait = phys->ops.wait_for_tx_complete; + break; + case MSM_ENC_VBLANK: + fn_wait = phys->ops.wait_for_vblank; + break; + default: + DPU_ERROR_ENC(dpu_enc, "unknown wait event %d\n", + event); + return -EINVAL; + }; + + if (fn_wait) { + DPU_ATRACE_BEGIN("wait_for_completion_event"); + ret = fn_wait(phys); + DPU_ATRACE_END("wait_for_completion_event"); + if (ret) + return ret; + } + } + + return ret; +} + +enum dpu_intf_mode dpu_encoder_get_intf_mode(struct drm_encoder *encoder) +{ + struct dpu_encoder_virt *dpu_enc = NULL; + int i; + + if (!encoder) { + DPU_ERROR("invalid encoder\n"); + return INTF_MODE_NONE; + } + dpu_enc = to_dpu_encoder_virt(encoder); + + if (dpu_enc->cur_master) + return dpu_enc->cur_master->intf_mode; + + for (i = 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; + + if (phys) + return phys->intf_mode; + } + + return INTF_MODE_NONE; +} |